After a lot of trial attempts and problems with formats and thicknesses; I finally got a good method and format for 3D printing CAD/BIM models. This was achieved using the software I use which is Vectorworks.

Below you see the Vectorworks file, the 3D Printing file & the resulting 3D print:

I’ve already written an e-book on 101 Vectorworks Tips & Tricks; thinking about one on 3D printing in 2015…